LTC3415
PRODUCTION7A, PolyPhase Synchronous Step-Down Regulator
- Part Models
- 2
- 1ku List Price
- Starting From $11.06
Overview
- High Efficiency: Up to 96%
- 7A Output Current at VIN = 3V
- Adjustable Frequency: 1.5MHz Nominal
- PolyPhase Operation (Up to 12 Phases)
- Spread Spectrum Frequency Modulation
- Output Tracking and Margining
- ±1% Reference Accuracy
- 2.5V to 5.5V VIN Range
- Phase Lockable from 0.75MHz to 2.25MHz
- Selectable Burst Mode® Operation
- Low Dropout Operation: 100% Duty Cycle
- Low Quiescent Current: 450µA
- Current Mode Operation for Excellent Line and Load Transient Response
- Shutdown Mode Draws Only 0.2µA Supply Current
- Available in 38-Pin (5mm × 7mm) QFN Package
The LTC3415 is a high efficiency, monolithic synchronous buck regulator using a phase lockable constant frequency, current mode architecture. PolyPhase® operation allows multiple LTC3415s to run out of phase while using minimal input and output capacitance. The operating supply range is from 5.5V down to 2.5V, making it suitable for single Lithium-Ion battery as well as point of load power supply applications. Burst Mode operation provides high efficiency at low load currents. 100% duty cycle provides low dropout operation that extends operating time in battery-operated systems.
The operating frequency is internally set at 1.5MHz, allowing the use of small surface mount inductors. For switching-noise sensitive applications, it can be externally synchronized from 0.75MHz to 2.25MHz. The PHMODE pin allows user control of the phase of the outgoing clock signal. The current sense comparator is factory trimmed for accurate output current sharing. Burst Mode operation is inhibited during synchronization or when the MODE pin is pulled low to reduce noise and RF interference.
Applications
- Point of Load Power Supply
- Portable Instruments
- Distributed Power Systems
- Battery-Powered Equipment
Documentation
Data Sheet 1
User Guide 2
Technical Articles 3
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| LTC3415EUHF#PBF | 38-Lead QFN (5mm x 7mm w/ EP) | ||
| LTC3415EUHF#TRPBF | 38-Lead QFN (5mm x 7mm w/ EP) |
This is the most up-to-date revision of the Data Sheet.
Software Resources
Can't find the software or driver you need?
Request a Driver/SoftwareHardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| Circuit Monitors 1 | ||
| LTC2960 | RECOMMENDED FOR NEW DESIGNS | 36V Nano-Current Two-Input Voltage Monitor |
| Oscillators 1 | ||
| LTC6909 | PRODUCTION | 1 to 8 Output, Multiphase Silicon Oscillator with Spread Spectrum Modulation |
| Power System Management (PSM) & Sequencers 1 | ||
| LTC2974 | RECOMMENDED FOR NEW DESIGNS | 4-Channel PMBus Power System Manager Featuring Accurate Output Current Measurement |
| Supervisory Circuits & Reset ICs 1 | ||
| LTC2935 | PRODUCTION | Ultra-Low Power Supervisor with Power-Fail Output, Selectable Thresholds |
Tools & Simulations
LTspice 1
Models for the following parts are available in LTspice:
- LTC3415
LTpowerCAD 1
Design tools for the following parts are available in LTpowerCAD:
- LTC3415
LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
LTpowerCAD® is a power supply design program which selects power stage components, provides detailed power efficiency, shows quick loop Bode plot stability and load transient analysis, and can export to LTspice for simulation.
Evaluation Kits
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